1 files changed, 127 insertions, 0 deletions
diff --git a/app/src/main/java/app/fedilab/android/client/entities/app/DomainsBlock.java b/app/src/main/java/app/fedilab/android/client/entities/app/DomainsBlock.java
new file mode 100644
index 000000000..6843b11fe
--- /dev/null
+++ b/app/src/main/java/app/fedilab/android/client/entities/app/DomainsBlock.java
@@ -0,0 +1,127 @@
+package app.fedilab.android.client.entities.app;
+
+import android.content.ContentValues;
+import android.content.Context;
+import android.content.SharedPreferences;
+import android.database.Cursor;
+import android.database.sqlite.SQLiteDatabase;
+
+import androidx.preference.PreferenceManager;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.net.URL;
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+import java.util.concurrent.TimeUnit;
+
+import javax.net.ssl.HttpsURLConnection;
+
+import app.fedilab.android.exception.DBException;
+import app.fedilab.android.helper.Helper;
+import app.fedilab.android.sqlite.Sqlite;
+
+
+public class DomainsBlock {
+
+    public static final String LAST_DATE_OF_UPDATE = "LAST_DATE_OF_UPDATE";
+    public static List<String> trackingDomains = null;
+
+    private static void getDomains(Context context) {
+        if (trackingDomains == null) {
+            try {
+                SQLiteDatabase db = Sqlite.getInstance(context.getApplicationContext(), Sqlite.DB_NAME, null, Sqlite.DB_VERSION).open();
+                Cursor c = db.query(Sqlite.TABLE_DOMAINS_TRACKING, null, null, null, null, null, null, null);
+                trackingDomains = cursorToDomain(c);
+            } catch (Exception e) {
+                e.printStackTrace();
+            }
+        }
+    }
+
+    public static void updateDomains(Context _mContext) {
+        SharedPreferences sharedpreferences = PreferenceManager.getDefaultSharedPreferences(_mContext);
+        String last_date = sharedpreferences.getString(LAST_DATE_OF_UPDATE, null);
+        Date dateUpdate = new Date(System.currentTimeMillis() - TimeUnit.DAYS.toMillis(10));
+        Date dateLastUpdate = Helper.stringToDate(_mContext, last_date);
+        SQLiteDatabase db = Sqlite.getInstance(_mContext.getApplicationContext(), Sqlite.DB_NAME, null, Sqlite.DB_VERSION).open();
+        if (last_date == null || dateUpdate.after(dateLastUpdate)) {
+            new Thread(() -> {
+                try {
+                    HttpsURLConnection connection = (HttpsURLConnection) new URL("https://hosts.fedilab.app/hosts").openConnection();
+                    if (connection.getResponseCode() > HttpsURLConnection.HTTP_MOVED_TEMP) {
+                        return;
+                    }
+                    BufferedReader br = new BufferedReader(new InputStreamReader(connection.getInputStream()));
+                    String line;
+                    List<String> domains = new ArrayList<>();
+                    while ((line = br.readLine()) != null) {
+                        if (line.startsWith("0.0.0.0 ")) {
+                            domains.add(line.replace("0.0.0.0 ", "").trim());
+                        }
+                    }
+                    br.close();
+                    connection.disconnect();
+                    insertDomains(db, domains);
+                    SharedPreferences.Editor editor = sharedpreferences.edit();
+                    editor.putString(LAST_DATE_OF_UPDATE, Helper.dateToString(new Date()));
+                    editor.apply();
+                } catch (IOException | DBException e) {
+                    e.printStackTrace();
+                }
+            }).start();
+        } else {
+            getDomains(_mContext);
+        }
+    }
+
+    /**
+     * Insert a domains in db
+     *
+     * @param domains {@link List<String>}
+     * @throws DBException exception with database
+     */
+    private static void insertDomains(SQLiteDatabase db, List<String> domains) throws DBException {
+
+        if (db == null) {
+            throw new DBException("db is null. Wrong initialization.");
+        }
+        db.delete(Sqlite.TABLE_DOMAINS_TRACKING, null, null);
+        DomainsBlock.trackingDomains = new ArrayList<>();
+        for (String domain : domains) {
+            ContentValues values = new ContentValues();
+            values.put(Sqlite.COL_DOMAIN, domain);
+            //Inserts token
+            try {
+                db.insertOrThrow(Sqlite.TABLE_DOMAINS_TRACKING, null, values);
+            } catch (Exception e) {
+                e.printStackTrace();
+            }
+            DomainsBlock.trackingDomains.add(domain);
+        }
+    }
+
+
+    /***
+     * Method to hydrate domain from database
+     * @param c Cursor
+     * @return List<String>
+     */
+    private static List<String> cursorToDomain(Cursor c) {
+        //No element found
+        if (c.getCount() == 0) {
+            c.close();
+            return null;
+        }
+        List<String> domains = new ArrayList<>();
+        while (c.moveToNext()) {
+            domains.add(c.getString(c.getColumnIndexOrThrow(Sqlite.COL_DOMAIN)));
+        }
+        //Close the cursor
+        c.close();
+        //domains list is returned
+        return domains;
+    }
+}